Clamp.



No. 825,171. I I PATENTED JULY 3, 1906. A. ANDERSON.

CLAMP.

APPLICATION FILED APR.18,1906.

13 1 j I kill 9 d uuzni'oz witneage UNITED STATES PATENT QFFIGE.

CLAMP.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed April 18. 1906. Serial No. 312,429.

To all whom, it may concern.-

Be it known that I, AUGUST ANDERSON, a citizen of the United States,residing at Birmingham, in the county of Jefferson and State of Alabama,have invented new and useful Improvements in Clamps, of which thefollowing is a specification.

My invention pertains to clamps for use in the joining of two or morepieces of wood through the medium of glue or the like; and its object isto provide a simple and strong clamp adapted to be operated withfacility and constructed with a View of assuring the proper joining ofthe parts comprised in a table, a counter-top, or other wide devicewithout liability of the parts or the device as a whole warping duringthe setting of the glue.

lVith the foregoing in mind the invention will be fully understood fromthe following description and claims when the same are read inconnection with the accompanying drawings, forming part of thisspecification, in which Figiu'e 1 is a front elevation of my novel clampwith certain of the parts in section. Fig. 2 is a transverse sectiontaken in the plane indicated by the line 2 2 of Fig. 1 lookingdownwardly. Figs. 3 and 4 are transverse sections taken in the planesindicated by the lines 3 3 and 4 4, respectively, of Fig. 1 looking inthe directions of the respective arrows.

Similar letters designate corresponding parts in all of the views of thedrawings, referring to which- A is the main frame of the clamp, which ispreferably made of steel, and comprises a head a and parallel side barsI), fixed to and extending at right angles from the head. In the head ais a longitudinally-disposed and central threaded aperture 0, while inthe inner edges of the side bars I) at intervals in the length thereofare opposite notches d, the lower walls a of which are arranged at rightangles to the frame A, so as to form safe supports for the work supportor rest presently described.

B is the work support or rest of the clamp as a whole. The said worksupport or rest is made up of a body f, preferably of steel, havingapertures g snugly receiving the side bars I), a block of wood h,secured on the up per side of the body f, so as to prevent scratching ormarring of the work and having bifurcations in its ends receiving the inner edges of the side bars I), and a fastener 7r, pivoted to the underside of the body f and arranged to rest on the lower walls e of thenotches (Z in the frame-bars b and in that way maintain the work supportor rest in the position in which it is placed in the frame A. hen thefastener it is turned to a position at an angle to that shown in Figs. 1and 4,

the work support or rest B may obviously be adjusted on the frame A inthe direction of the length thereof, and therefore in order to lessenthe liability of the fastener casually moving from the position stated Imake the fastener 7r heavy in proportion, so that it will tend to remainin the position in which it is placed. In this connection it will beapparent that when the clamp is in use and work is pressed against thesupport B the fastener is is crowded against the walls 0 of theparticular notches (Z in which it is placed, and hence at that timethere is no liability of the fastener casually moving and disengagingitself from the notches d.

C is the follower or work-holding member of the clamp. The said followeror workholding member comprises a body Z, preferably of steel, having arecess m in its under side and also having apertures snugly receiv ingthe side bars b of the frame, and a block n, of wood or other approvedmaterial, secured to the under side of the body C and designed to servethe same purpose as the block h--i. 6., to prevent scratching or marringof the work while the same is in the clamp.

D is a screw swiveled at its lower end in the body of the follower orwork-holding member C, as indicated by p, and bearing in the threadedaperture 0 in the frame-head a and terminating at its upper end in acrank q, and E is a handle, preferably of wood, rotatably arranged andsecured on the upturned portion of the said crank In the practical useof my novel clamp it will be apparent that when the screw 1) is turnedthrough the threaded aperture 0 the follower or work-holding member 0will be moved up or down, according to the direction in which the screwis rotated. It will also be apparent that by reason of the clamp frame Ahaving the two side bars there is no liability of the clamp springingwhen a wide piece of work is held therein, and consequently no liabilityof the piece of work warping while it is in the clamp.

It will further be apparent that, considered IOF as a whole, my novelclamp is strong and durable, and henceis well adapted to withstand therough usage to which clamps are ordinarily subjected.

The construction herein shown and described is the preferred embodimentof my invention; but 'I would have it understood that in practice suchchanges or modifications may be made as fairly fall within the scope ofmy invention without involving departure from my claims.

Having described my invention, What I claim, and desire to secure byLetters Patent, is

1. The combination in a clamp, of a frame comprising side bars havingnotches at intervals in the length of their inner edges, a work supportor rest mounted on the side bars of the frame and movable in thedirection of the length thereof, a fastener pivoted to the under side ofthe work support or rest and arranged to be swung into and out of thenotches in the side bars, a follower or workholding member adjustable onthe side bars of the main frame and toward and from the work support orrest, and means for adjusting and adjustably fixing the follower orwork-holding member and connecting the said follower or work-holdingmember and the frame.

2. The combination in a clamp, of a me tallic frame comprising a headhaving a central and longitudinallydisposed, threaded aperture, and sidebars fixed to the head and having notches in their inner edges atintervals in their length the lower Walls of which notches are square, awork support or rest adjustable on the side bars of the frame andcomprising a metallic body having apertures snugly receiving said sidebars, a fastener pivoted to the under side of the body and ar ranged tobe swung horizontally into and out of notches in the side bars, and ablock of wood fastened on the upper side of the body, a follower orwork-holding member having a metallic body snugly receiving andadjustable on the side bars of the frame and also having a'block of woodon the under side of the said body, and a screw swiveled in the followeror work-holding member and bearing in the threaded aperture in the headof the frame and having on its upper portion a handle.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

AUGUST ANDERSON. Witnesses:

GEO. P. RoBERTs, JOHN F. KNIGHT.

